I was watching a youtube video (https://www.youtube.com/watch?v=yObxw0gy7n8) and under it in the comments was a link to this page - Nervous system manipulation by electromagnetic fields from monitors -(https://www.google.com/patents/US6506148) with comments like: Computer monitors and TV monitors can be made to emit weak low-frequency electromagnetic fields merely by pulsing the intensity of displayed images. Experiments have shown that the ½ Hz sensory resonance can be excited in this manner in a subject near the monitor. The 2.4 Hz sensory resonance can also be excited in this fashion. Hence, a TV monitor or computer monitor can be used to manipulate the nervous system of nearby people. Certain monitors can emit electromagnetic field pulses that excite a sensory resonance in a nearby subject, through image pulses that are so weak as to be subliminal. This is unfortunate since it opens a way for mischievous application of the invention, whereby people are exposed unknowingly to manipulation of their nervous systems for someone else's purposes. Such application would be unethical and is of course not advocated. It is mentioned here in order to alert the public to the possibility of covert abuse that may occur while being online, or while watching TV, a video, or a DVD. I remember reading a book, think it was by Michael Brown (Spirit Daily) about how there will come a time when we will have to ditch the electronics or they will control us through them. Think that time is close...